<script setup lang="ts">
import { ref, useAttrs, watch } from 'vue';
import type { UploadFileInfo, UploadProps } from 'naive-ui';
import { fetchBatchDeleteOss } from '@/service/api/system/oss';
import { getToken } from '@/store/modules/auth/shared';
import { getServiceBaseURL } from '@/utils/service';

defineOptions({
  name: 'FileUpload'
});

interface Props {
  action?: string;
  data?: Record<string, any>;
  defaultUpload?: boolean;
  showTip?: boolean;
  max?: number;
  accept?: string;
  fileSize?: number;
  uploadType?: 'file' | 'image';
}

const props = withDefaults(defineProps<Props>(), {
  action: `/resource/oss/upload`,
  data: undefined,
  defaultUpload: true,
  showTip: true,
  max: 5,
  accept: '.doc,.docx,.xls,.xlsx,.ppt,.pptx,.txt,.pdf',
  fileSize: 5,
  uploadType: 'file'
});

const attrs: UploadProps = useAttrs();

let fileNum = 0;
const fileList = ref<UploadFileInfo[]>([]);

const needRelaodData = ref(false);

defineExpose({
  needRelaodData
});
watch(
  () => fileList.value,
  newValue => {
    needRelaodData.value = newValue.length > 0;
  }
);

const isHttpProxy = import.meta.env.DEV && import.meta.env.VITE_HTTP_PROXY === 'Y';
const { baseURL } = getServiceBaseURL(import.meta.env, isHttpProxy);

const headers: Record<string, string> = {
  Authorization: `Bearer ${getToken()}`,
  clientid: import.meta.env.VITE_APP_CLIENT_ID!
};

function beforeUpload(options: { file: UploadFileInfo; fileList: UploadFileInfo[] }) {
  fileNum += 1;
  const { file } = options;

  // 校检文件类型
  if (props.accept) {
    const fileName = file.name.split('.');
    const fileExt = `.${fileName[fileName.length - 1]}`;
    const isTypeOk = props.accept.split(',')?.includes(fileExt);
    if (!isTypeOk) {
      window.$message?.error(`文件格式不正确, 请上传 ${props.accept} 格式文件!`);
      return false;
    }
  }
  // 校检文件名是否包含特殊字符
  if (file.name.includes(',')) {
    window.$message?.error('文件名不正确，不能包含英文逗号!');
    return false;
  }
  // 校检文件大小
  if (props.fileSize && file.file?.size) {
    const isLt = file.file?.size / 1024 / 1024 < props.fileSize;
    if (!isLt) {
      window.$message?.error(`上传文件大小不能超过 ${props.fileSize} MB!`);
      return false;
    }
  }
  return true;
}

function isErrorState(xhr: XMLHttpRequest) {
  const responseText = xhr?.responseText;
  const response = JSON.parse(responseText);
  return response.code !== 200;
}

function handleFinish(options: { file: UploadFileInfo; event?: ProgressEvent }) {
  fileNum -= 1;
  const { file, event } = options;
  // @ts-expect-error Ignore type errors
  const responseText = event?.target?.responseText;
  const response = JSON.parse(responseText);
  const oss: Api.System.Oss = response.data;
  fileList.value.find(item => item.id === file.id)!.id = String(oss.ossId);
  file.id = String(oss.ossId);
  file.url = oss.url;
  file.name = oss.fileName;
  if (fileNum === 0) {
    window.$message?.success('上传成功');
  }
  return file;
}

function handleError(options: { file: UploadFileInfo; event?: ProgressEvent }) {
  const { event } = options;
  // @ts-expect-error Ignore type errors
  const responseText = event?.target?.responseText;
  const msg = JSON.parse(responseText).msg;
  window.$message?.error(msg || '上传失败');
}

async function handleRemove(file: UploadFileInfo) {
  if (file.status !== 'finished') {
    return;
  }
  const { error } = await fetchBatchDeleteOss([file.id]);
  if (error) return;
  window.$message?.success('删除成功');
}
</script>

<template>
  <NUpload
    v-bind="attrs"
    v-model:file-list="fileList"
    :action="`${baseURL}${action}`"
    :data="data"
    :headers="headers"
    :max="max"
    :accept="accept"
    :multiple="max > 1"
    directory-dnd
    :default-upload="defaultUpload"
    :list-type="uploadType === 'image' ? 'image-card' : 'text'"
    :is-error-state="isErrorState"
    @finish="handleFinish"
    @error="handleError"
    @before-upload="beforeUpload"
    @remove="({ file }) => handleRemove(file)"
  >
    <NUploadDragger v-if="uploadType === 'file'">
      <div class="mb-12px flex-center">
        <SvgIcon icon="material-symbols:unarchive-outline" class="text-58px color-#d8d8db dark:color-#a1a1a2" />
      </div>
      <NText class="text-16px">点击或者拖动文件到该区域来上传</NText>
      <NP v-if="showTip" depth="3" class="mt-8px text-center">
        请上传
        <template v-if="fileSize">
          大小不超过
          <b class="text-red-500">{{ fileSize }}MB</b>
        </template>
        <template v-if="accept">
          ，且格式为
          <b class="text-red-500">{{ accept.replaceAll(',', '/') }}</b>
        </template>
        的文件
      </NP>
    </NUploadDragger>
  </NUpload>
  <NP v-if="showTip && uploadType === 'image'" depth="3" class="mt-12px">
    请上传
    <template v-if="fileSize">
      大小不超过
      <b class="text-red-500">{{ fileSize }}MB</b>
    </template>
    <template v-if="accept">
      ，且格式为
      <b class="text-red-500">{{ accept.replaceAll(',', '/') }}</b>
    </template>
    的文件
  </NP>
</template>

<style scoped></style>
